Niels Bohr Institute

Happening at Strong 2025

Master defense by Matilde Garcia

On June 11, 2025 at 11:00 AM in room HB1 at the Niels Bohr Institute, Matilde Garcia will defend her master thesis supervised by Associate Professor Jose Maria Ezquiaga.

All you wanted to know about black hole spectroscopy

Black holes vibrate, like stars, or guitar strings. The "ringdown" radiation emitted by oscillating black holes has great scientific potential.

Environmental Dynamics in Extreme Mass Ratio Inspirals

With the upcoming launch of the LISA mission, scientists will detect gravitational waves at lower frequencies than ever before, and this will bring new data on galactic centres and the monstrous black holes that reside…

A recent study published in Physical Review Letters:

Cosmic Waltz

A recent study published in Physical Review Letters shows that electromagnetic observations of stars

Galaxies 2023 Best Paper Award

Galaxies Best Paper Award

The paper "Key Science Goals for the Next-Generation Event Horizon Telescope” by the ngEHT collaboration, where Vitor Cardoso was Working Group leader and Yifan Chen Topic Leader, was selected as the winner of the…

From September 1, 2025, the new Center of Gravity funded by the Danish National Research Foundation will officially start:

Center Coordinator retreat 2025

From September 1, 2025, the new Center of Gravity funded by the Danish National Research Foundation will officially start.

Gravitational-wave astronomy will celebrate a decade of existence in 2025:

The 5th Scandinavian meeting on gravitational-wave science

The Scandinavian community has been producing exciting results in the field and met for the 5th Meeting on Gravitational Wave Science in Scandinavia on May 15 and 16 at the University of Copenhagen.

gravitational waves at frequencies above the kilohertz range:

Boosting high-frequency gravitational wave and ultralight dark matter searches

Boosting high-frequency gravitational wave and ultralight dark matter searches

Work by Strong Members:

Staff Picks on Wolfram Community

Work by Strong Members is a Feature by the Staff Picks on Wolfram Community. The work, Forward ray tracing and hot spots in Kerr spacetime, was developed by Lihang Zhou a visiting student at Strong, Zhen Zhong, Yifan…

Gravitational waves:

Cosmic whispers made LOUD by intervening matter

Every few minutes, somewhere in the Universe, a black hole encounters another and starts a fateless ritual around each other until their collision. Through this dance, space and time is excited, producing vibrations…

Strong field gravity in India

Vitor visited colleagues Kothawala, Mishra and Sriramkumar at Chennai and delivered the Chandrasekhar Lecture

Our latest social gathering:

Photography Competition at STRONG

Our latest social gathering uniquely blended science and art with a pre-screening of Gravitating Gestures, a captivating video artwork by Sjoerd Knibbeler, created during his 2024 residency with the Strong Group.

Gravitating Gestures (2025):

Gravitating Gestures

Gravitating Gestures (2025) captures the intimate processes of theoretical discovery, focusing on eleven physicists of the Niels Bohr Institute navigating the abstract planes of black hole physics.

Galaxies do not affect black hole spectroscopy

When a black hole is disturbed, it “rings” like a bell before settling down - a phenomenon known as black hole ringdown. The study of the vibration modes of black holes is called spectroscopy, in analogy with atomic…

PhD defense by Daniele Pica, NBI/Perugia

On February 20, 2025 at 14.00, in Aud. A. Daniele Pica will defend his PhD thesis supervised by Marta Orselli (University of Perugia) and Troels Harmark (NBI). The thesis defense will be in English.

Master defense:

Master defense by Miao Shang

On Monday January 13, 2025 at 13:15 in room Hb1 at Blegdamsvej, Miao Shang will defend her master thesis supervised by Jose Ezquiaga. Censor will be Marta Orselli (University of Perugia). The thesis defense will be in…

conference on Lensing and Wave optic:

Strong at Erwin Schrödinger Institute, Vienna

From December 9-13, 2024, the gravitational-wave explorers of the Strong group at the Niels Bohr Institute attended a conference on Lensing and Wave optics in Strong gravity at the Erwin Schrödinger Institute in Vienna.